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Zhang Z, Li Y, Liu Y, Li Y, Wang Z, Wang D, Yan L, Zhao J, Li BL. Optimization of Quartz Sand-Enhanced Coagulation for Sewage Treatment by Response Surface Methodology. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3482. [PMID: 39063774 PMCID: PMC11278384 DOI: 10.3390/ma17143482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2024] [Revised: 07/05/2024] [Accepted: 07/11/2024] [Indexed: 07/28/2024]
Abstract
The quartz sand-enhanced coagulation (QSEC) is an improved coagulation method for treating water, which uses quartz sand as a heavy medium to accelerate the sedimentation rate of flocs and reduce the sedimentation time. The factors that influence the QSEC effect and can be controlled manually include the quartz sand dosage, coagulant dosage, sewage pH, stirring time, settling time, etc., and their reasonable setting is critical to the result of water treatment. This paper aimed to study the optimal conditions of QSEC; first, single-factor tests were conducted to explore the optimal range of influencing factors, followed by response surface methodology (RSM) tests to accurately determine the optimum values of significant factors. The results show that the addition of quartz sand did not improve the water quality of the coagulation treatment, it took only 140 s for the floc to sink to the bottom, and the sediment volume only accounted for 12.2% of the total sewage. The quartz sand dosage, the coagulant dosage, and sewage pH all had a significant impact on the coagulation effect, and resulted in inflection points. A QSEC-guiding model was derived through RSM tests, and subsequent model optimization and experimental validation revealed the optimal conditions for treating domestic sewage as follows: the polyaluminum chloride (PAC) dosage, cationic polyacrylamide (CPAM) dosage, the sewage pH, quartz sand dosage, stirring time, and settling time were 0.97 g/L, 2.25 mg/L, 7.22, 2 g/L, 5 min, and 30 min, respectively, and the turbidity of the treated sewage was reduced to 1.15 NTU.
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Affiliation(s)
- Zhengan Zhang
- Henan International Joint Laboratory of Watershed Ecological Security in the Water Source Area of the Middle Route of South-to-North Water Diversion Project, College of Water Resource and Modern Agriculture, Nanyang Normal University, Nanyang 473061, China; (Z.Z.); (Y.L.); (Y.L.); (Z.W.); (D.W.); (L.Y.); (B.L.L.)
| | - Yepu Li
- Henan International Joint Laboratory of Watershed Ecological Security in the Water Source Area of the Middle Route of South-to-North Water Diversion Project, College of Water Resource and Modern Agriculture, Nanyang Normal University, Nanyang 473061, China; (Z.Z.); (Y.L.); (Y.L.); (Z.W.); (D.W.); (L.Y.); (B.L.L.)
| | - Yongzhi Liu
- School of Environmental Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Yuying Li
- Henan International Joint Laboratory of Watershed Ecological Security in the Water Source Area of the Middle Route of South-to-North Water Diversion Project, College of Water Resource and Modern Agriculture, Nanyang Normal University, Nanyang 473061, China; (Z.Z.); (Y.L.); (Y.L.); (Z.W.); (D.W.); (L.Y.); (B.L.L.)
| | - Zonghua Wang
- Henan International Joint Laboratory of Watershed Ecological Security in the Water Source Area of the Middle Route of South-to-North Water Diversion Project, College of Water Resource and Modern Agriculture, Nanyang Normal University, Nanyang 473061, China; (Z.Z.); (Y.L.); (Y.L.); (Z.W.); (D.W.); (L.Y.); (B.L.L.)
| | - Dayang Wang
- Henan International Joint Laboratory of Watershed Ecological Security in the Water Source Area of the Middle Route of South-to-North Water Diversion Project, College of Water Resource and Modern Agriculture, Nanyang Normal University, Nanyang 473061, China; (Z.Z.); (Y.L.); (Y.L.); (Z.W.); (D.W.); (L.Y.); (B.L.L.)
| | - Lu Yan
- Henan International Joint Laboratory of Watershed Ecological Security in the Water Source Area of the Middle Route of South-to-North Water Diversion Project, College of Water Resource and Modern Agriculture, Nanyang Normal University, Nanyang 473061, China; (Z.Z.); (Y.L.); (Y.L.); (Z.W.); (D.W.); (L.Y.); (B.L.L.)
| | - Jiayin Zhao
- College of Water Resource and Modern Agriculture, Nanyang Normal University, Nanyang 473061, China;
| | - Bailian Larry Li
- Henan International Joint Laboratory of Watershed Ecological Security in the Water Source Area of the Middle Route of South-to-North Water Diversion Project, College of Water Resource and Modern Agriculture, Nanyang Normal University, Nanyang 473061, China; (Z.Z.); (Y.L.); (Y.L.); (Z.W.); (D.W.); (L.Y.); (B.L.L.)
- Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA
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Liu Z, Hao N, Hou Y, Wang Q, Liu Q, Yan S, Chen F, Zhao L. Technologies for harvesting the microalgae for industrial applications: Current trends and perspectives. BIORESOURCE TECHNOLOGY 2023; 387:129631. [PMID: 37544545 DOI: 10.1016/j.biortech.2023.129631] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/02/2023] [Accepted: 08/03/2023] [Indexed: 08/08/2023]
Abstract
Microalgae are emerging as a promising source for augmenting the supply of essential products to meet global demands in an environmentally sustainable manner. Despite the potential benefits of microalgae in industry, the high energy consumption for harvesting remains a significant obstacle. This review offers a comprehensive overview of microalgae harvesting technologies and their industrial applications, with particular emphasis on the latest advances in flocculation techniques. These cutting-edge methods have been applied to biodiesel production, food and nutraceutical processing, and wastewater treatment. Large-scale harvesting is still severely impeded by the high cost despite progress has been made in laboratory studies. In the future, cost-effective microalgal harvesting will rely on efficient resource utilization, including the use of waste materials and the reuse of media and flocculants. Additionally, precise regulation of biological metabolism will be necessary to overcome algal species-related limitations through the development of extracellular polymeric substance-induced flocculation technology.
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Affiliation(s)
- Zhiyong Liu
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China; National Center of Technology Innovation for Synthetic Biology, Tianjin, China
| | - Nahui Hao
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China; National Center of Technology Innovation for Synthetic Biology, Tianjin, China; College of Biotechnology, Tianjin University of Science and Technology, Tianjin, China
| | - Yuyong Hou
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China; National Center of Technology Innovation for Synthetic Biology, Tianjin, China
| | - Qing Wang
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China; National Center of Technology Innovation for Synthetic Biology, Tianjin, China
| | - Qingling Liu
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China; National Center of Technology Innovation for Synthetic Biology, Tianjin, China; College of Biotechnology, Tianjin University of Science and Technology, Tianjin, China
| | - Suihao Yan
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China; National Center of Technology Innovation for Synthetic Biology, Tianjin, China; College of Biotechnology, Tianjin University of Science and Technology, Tianjin, China
| | - Fangjian Chen
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China; National Center of Technology Innovation for Synthetic Biology, Tianjin, China
| | - Lei Zhao
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China; National Center of Technology Innovation for Synthetic Biology, Tianjin, China.
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3
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Wu G, Tham PE, Chew KW, Munawaroh HSH, Tan IS, Wan-Mohtar WAAQI, Sriariyanun M, Show PL. Net zero emission in circular bioeconomy from microalgae biochar production: A renewed possibility. BIORESOURCE TECHNOLOGY 2023; 388:129748. [PMID: 37714493 DOI: 10.1016/j.biortech.2023.129748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/09/2023] [Accepted: 09/06/2023] [Indexed: 09/17/2023]
Abstract
The rapid expansion of industrialization and continuous population growth have caused a steady increase in energy consumption. Despite using renewable energy, such as bioethanol, to replace fossil fuels had been strongly promoted, however the outcomes were underwhelming, resulting in excessive greenhouse gases (GHG) emissions. Microalgal biochar, as a carbon-rich material produced from the pyrolysis of biomass, provides a promising solution for achieving net zero emission. By utilizing microalgal biochar, these GHG emissions can be captured and stored efficiently. It also enhances soil fertility, improves water retention, and conduct bioremediation in agriculture and environmental remediation field. Moreover, incorporating microalgal biochar into a zero-waste biorefinery could boost the employ of biomass feedstocks effectively to produce valuable bioproducts while minimizing waste. This contributes to sustainability and aligns with the concepts of a circular bioeconomy. In addition, some challenges like commercialization and standardization will be addressed in the future.
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Affiliation(s)
- Guowei Wu
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Malaysia
| | - Pei En Tham
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Malaysia
| | - Kit Wayne Chew
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
| | - Heli Siti Halimatul Munawaroh
- Study Program of Chemistry, Faculty of Mathematics and Science Education, Universitas Pendidikan Indonesia, Jalan Dr. Setiabudi 229, Bandung 40154, Indonesia
| | - Inn Shi Tan
- Department of Chemical and Energy Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, Miri, Sarawak 98009, Malaysia
| | - Wan Abd Al Qadr Imad Wan-Mohtar
- Functional Omics and Bioprocess Development Laboratory, Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Malinee Sriariyanun
- Biorefinery and Process Automation Engineering Center, Department of Chemical and Process Engineering, The Sirindhorn International Thai-German Graduate School of Engineering, King Mongkut's University of Technology North Bangkok, Bangkok 10800, Thailand
| | - Pau Loke Show
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Malaysia; Department of Chemical Engineering, Khalifa University, Shakhbout Bin Sultan St - Zone 1, Abu Dhabi, United Arab Emirates.
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Naseema Rasheed R, Pourbakhtiar A, Mehdizadeh Allaf M, Baharlooeian M, Rafiei N, Alishah Aratboni H, Morones-Ramirez JR, Winck FV. Microalgal co-cultivation -recent methods, trends in omic-studies, applications, and future challenges. Front Bioeng Biotechnol 2023; 11:1193424. [PMID: 37799812 PMCID: PMC10548143 DOI: 10.3389/fbioe.2023.1193424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 09/08/2023] [Indexed: 10/07/2023] Open
Abstract
The burgeoning human population has resulted in an augmented demand for raw materials and energy sources, which in turn has led to a deleterious environmental impact marked by elevated greenhouse gas (GHG) emissions, acidification of water bodies, and escalating global temperatures. Therefore, it is imperative that modern society develop sustainable technologies to avert future environmental degradation and generate alternative bioproduct-producing technologies. A promising approach to tackling this challenge involves utilizing natural microbial consortia or designing synthetic communities of microorganisms as a foundation to develop diverse and sustainable applications for bioproduct production, wastewater treatment, GHG emission reduction, energy crisis alleviation, and soil fertility enhancement. Microalgae, which are photosynthetic microorganisms that inhabit aquatic environments and exhibit a high capacity for CO2 fixation, are particularly appealing in this context. They can convert light energy and atmospheric CO2 or industrial flue gases into valuable biomass and organic chemicals, thereby contributing to GHG emission reduction. To date, most microalgae cultivation studies have focused on monoculture systems. However, maintaining a microalgae monoculture system can be challenging due to contamination by other microorganisms (e.g., yeasts, fungi, bacteria, and other microalgae species), which can lead to low productivity, culture collapse, and low-quality biomass. Co-culture systems, which produce robust microorganism consortia or communities, present a compelling strategy for addressing contamination problems. In recent years, research and development of innovative co-cultivation techniques have substantially increased. Nevertheless, many microalgae co-culturing technologies remain in the developmental phase and have yet to be scaled and commercialized. Accordingly, this review presents a thorough literature review of research conducted in the last few decades, exploring the advantages and disadvantages of microalgae co-cultivation systems that involve microalgae-bacteria, microalgae-fungi, and microalgae-microalgae/algae systems. The manuscript also addresses diverse uses of co-culture systems, and growing methods, and includes one of the most exciting research areas in co-culturing systems, which are omic studies that elucidate different interaction mechanisms among microbial communities. Finally, the manuscript discusses the economic viability, future challenges, and prospects of microalgal co-cultivation methods.
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Affiliation(s)
| | - Asma Pourbakhtiar
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | | | - Maedeh Baharlooeian
- Department of Marine Biology, Faculty of Marine Science and Oceanography, Khorramshahr University of Marine Science and Technology, Khorramshahr, Iran
| | - Nahid Rafiei
- Regulatory Systems Biology Lab, Center for Nuclear Energy in Agriculture, University of São Paulo, Piracicaba, Brazil
- Centro de Investigación en Biotecnología y Nanotecnología, Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, Parque de Investigación e Innovación Tecnológica, Apodaca, Nuevo León, Mexico
| | - Hossein Alishah Aratboni
- Regulatory Systems Biology Lab, Center for Nuclear Energy in Agriculture, University of São Paulo, Piracicaba, Brazil
- Centro de Investigación en Biotecnología y Nanotecnología, Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, Parque de Investigación e Innovación Tecnológica, Apodaca, Nuevo León, Mexico
| | - Jose Ruben Morones-Ramirez
- Centro de Investigación en Biotecnología y Nanotecnología, Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, Parque de Investigación e Innovación Tecnológica, Apodaca, Nuevo León, Mexico
- Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, Universidad Autonoma de Nuevo Leon (UANL), Av Universidad s/n, CD. Universitaria, San Nicolás de los Garza, Nuevo León, Mexico
| | - Flavia Vischi Winck
- Regulatory Systems Biology Lab, Center for Nuclear Energy in Agriculture, University of São Paulo, Piracicaba, Brazil
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5
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Singh HM, Sharma M, Tyagi VV, Goria K, Buddhi D, Sharma A, Bruno F, Sheoran S, Kothari R. Potential of biogenic and non-biogenic waste materials as flocculant for algal biomass harvesting: Mechanism, parameters, challenges and future prospects. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 337:117591. [PMID: 36996549 DOI: 10.1016/j.jenvman.2023.117591] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 02/14/2023] [Accepted: 02/24/2023] [Indexed: 06/19/2023]
Abstract
In this review article, waste materials (biogenic/non-biogenic) are focused as the flocculants for harvesting of algal biomass. Chemical flocculants are widely utilized for the effective harvesting of algal biomass at a commercial scale while the high cost is a major drawback. The waste materials-based flocculants (WMBF) are started to utilize as one of the cost-effective performance for dual benefits of waste minimization and reuse for sustainable recovery of biomass. The novelty of the article is articulated with the objective that presents an insight of WMBF, classification of WMBF, preparation methods of WMBF, mechanisms of flocculation, factors affecting flocculation-mechanism, challenges and future recommendations that are required for harvesting of algae. The WMBF are shown similar flocculation mechanisms and flocculation efficiencies as chemical flocculants. Thus, the utilization of waste material for the flocculation process of algal cells minimizes the waste load into the environment and transforms the waste materials into valuable resources.
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Affiliation(s)
- Har Mohan Singh
- School of Energy Management, Shri Mata Vaishno Devi University, Katra, J&K, 182320, India
| | - Mriduta Sharma
- School of Energy Management, Shri Mata Vaishno Devi University, Katra, J&K, 182320, India
| | - V V Tyagi
- School of Energy Management, Shri Mata Vaishno Devi University, Katra, J&K, 182320, India.
| | - Kajol Goria
- Department of Environmental Sciences, Central University of Jammu, Rahya Suchani, (Bagla) Samba, J&K, 181143, India
| | - D Buddhi
- Uttaranchal Institute of Technology, Uttaranchal University, Uttarakhand, 248007, Dehradun, India
| | - Atul Sharma
- Non-Conventional Energy Laboratory, Rajiv Gandhi Institute of Petroleum Technology, Jais, Amethi, UP, India
| | - Frank Bruno
- Future Industries Institute, Mawson Lakes Campus, University of South Australia, Australia
| | - Shane Sheoran
- Future Industries Institute, Mawson Lakes Campus, University of South Australia, Australia
| | - Richa Kothari
- Department of Environmental Sciences, Central University of Jammu, Rahya Suchani, (Bagla) Samba, J&K, 181143, India.
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6
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Hussin AA, Hidayah Ahmad NA, Mohd Asri NF, Nik Malek NAN, Mohd Amin MF, Kamaroddin MF. Cultivation of Arthrospira platensis and harvesting using edible fungi isolated from mould soybean cake. BIORESOURCE TECHNOLOGY 2023; 373:128743. [PMID: 36791974 DOI: 10.1016/j.biortech.2023.128743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 02/09/2023] [Accepted: 02/10/2023] [Indexed: 06/18/2023]
Abstract
In this study, the cultivation and harvesting of Arthrospira platensis biomass were proposed via simple, safe, and efficient techniques for direct consumption. Cultivation of microalgae in a covered macrobubble column under outdoor conditions resulted in significant differences (p < 0.05) with a maximum dry cell weight (Xm) of 0.959 ± 0.046 g/L. Notably, outdoor cultures resulted in approximately twofold biomass compared to indoor cultures. This outcome shows that the developed outdoor setup integrated with solar panels while utilising Malaysia's weather and atmospheric air as carbon sources is viable. Meanwhile, for harvesting, the screening showed that the fungus isolated from mould soybean cake (tempeh) starter indicated the highest harvesting efficiency, which was then further identified as Rhizopus microsporus, microscopically and molecularly. Overall, the economical and portable setup of outdoor cultivation coupled with safe harvesting via locally isolated fungus from tempeh as a bioflocculant would provide sustainability to produce A. platensis biomass.
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Affiliation(s)
- Aimi Alina Hussin
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia.
| | - Nur Amira Hidayah Ahmad
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia.
| | - Nur Fakhira Mohd Asri
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia.
| | - Nik Ahmad Nizam Nik Malek
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia.
| | | | - M Farizal Kamaroddin
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia.
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Barzee TJ, El-Mashad HM, Burch AR, Franz AK, Zhang R. Immobilization of Diatom Phaeodactylum tricornutum with Filamentous Fungi and Its Kinetics. J Microbiol Biotechnol 2023; 33:251-259. [PMID: 36524340 PMCID: PMC9998213 DOI: 10.4014/jmb.2209.09042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/15/2022] [Accepted: 11/15/2022] [Indexed: 12/23/2022]
Abstract
Immobilizing microalgae cells in a hyphal matrix can simplify harvest while producing novel mycoalgae products with potential food, feed, biomaterial, and renewable energy applications; however, limited quantitative information to describe the process and its applicability under various conditions leads to difficulties in comparing across studies and scaling-up. Here, we demonstrate the immobilization of both active and heat-deactivated marine diatom Phaeodactylum tricornutum (UTEX 466) using different loadings of fungal pellets (Aspergillus sp.) and model the process through kinetics and equilibrium models. Active P. tricornutum cells were not required for the fungal-assisted immobilization process and the fungal isolate was able to immobilize more than its original mass of microalgae. The Freundlich isotherm model adequately described the equilibrium immobilization characteristics and indicated increased normalized algae immobilization (g algae removed/g fungi loaded) under low fungal pellet loadings. The kinetics of algae immobilization by the fungal pellets were found to be adequately modeled using both a pseudo-second order model and a model previously developed for fungal-assisted algae immobilization. These results provide new insights into the behavior and potential applications of fungal-assisted algae immobilization.
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Affiliation(s)
- Tyler J Barzee
- Department of Biosystems and Agricultural Engineering, University of Kentucky, Lexington, KY 40546, USA.,Department of Biological and Agricultural Engineering, University of California Davis, Davis, CA 95616, USA
| | - Hamed M El-Mashad
- Department of Biological and Agricultural Engineering, University of California Davis, Davis, CA 95616, USA.,Agricultural Engineering Department, Mansoura University, El Mansoura, Egypt
| | - Andrew R Burch
- Department of Chemistry, University of California, Davis, CA 95616, USA.,Biochemistry, Molecular, Cellular and Developmental Biology Graduate Group, University of California, Davis, CA 95616, USA
| | - Annaliese K Franz
- Department of Chemistry, University of California, Davis, CA 95616, USA.,Biochemistry, Molecular, Cellular and Developmental Biology Graduate Group, University of California, Davis, CA 95616, USA
| | - Ruihong Zhang
- Department of Biological and Agricultural Engineering, University of California Davis, Davis, CA 95616, USA
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Algal-fungal interactions and biomass production in wastewater treatment: Current status and future perspectives. ALGAL RES 2023. [DOI: 10.1016/j.algal.2023.103021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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9
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Zhang J, Li Y, Shao E, Chow V, Li J, Qian J, Xu P, Li J, Song H, Zhou W, Shao S. Feasibility and constraints of edible fungi bio-flocculating microalgae. ALGAL RES 2023. [DOI: 10.1016/j.algal.2023.103004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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10
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Zhang C, Laipan M, Zhang L, Yu S, Li Y, Guo J. Capturing effects of filamentous fungi Aspergillus flavus ZJ-1 on microalgae Chlorella vulgaris WZ-1 and the application of their co-integrated fungi-algae pellets for Cu(II) adsorption. JOURNAL OF HAZARDOUS MATERIALS 2023; 442:130105. [PMID: 36206717 DOI: 10.1016/j.jhazmat.2022.130105] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/24/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
Using filamentous fungi to capture unicellular microalgae is an effective way for microalgae recovery in water treatment. Here, fungi Aspergillus flavus ZJ-1 and microalgae Chlorella vulgaris WZ-1 isolated from a copper tailings pond were used to study the capture effect of ZJ-1 on WZ-1. The highest capture efficiency (97.85%) was obtained within 6 h under the optimized conditions of 30 °C, 150 rpm, fungi-algae biomass ratio of 2.24:1, and initial pH of 9.24 in microalgae medium. The formed fungi-algae pellets (FAPs) were further used to remove Cu(II) from aqueous solution. Results showed that the FAPs formed at different capture times all adsorbed Cu(II) well, and the PAFs formed within 2 h (PAFs2 h) exhibited the highest Cu(II) adsorption capacity (80.42 mg·g-1). SEM images showed that Cu(II) caused a change in the internal structure of PAFs2 h from loose to compact, the mycelium shrunk, and the microalgal cells were concave. Cu(II) adsorption by PAFs2 h was well conformed to the pseudo-second-order kinetics and the Langmuir isotherm (123.61 mg·g-1 of theoretically maximum adsorption capacity). This work opens a way for applying FAPs in the remediation of heavy metal-contaminated wastewater, and the metal adsorption effect was determined by the capture amount of microalgae.
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Affiliation(s)
- Chao Zhang
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China.
| | - Minwang Laipan
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - Lei Zhang
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - Shenghui Yu
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - Yongtao Li
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China; College of Resources and Environment, South China Agricultural University, Guangzhou 510642, PR China
| | - Junkang Guo
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
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Hao N, Liu Z, Hou Y, Fan Z, Li Y, Chen F, Zhao L. Small peptide glutathione-induced bioflocculation for enhancing the food application potential of Chlorella pyrenoidosa. BIORESOURCE TECHNOLOGY 2022; 365:128138. [PMID: 36252754 DOI: 10.1016/j.biortech.2022.128138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/10/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Existing flocculants are used to enhance the harvesting efficiency of microalgae; however, harvesting biomass containing residues is unsuitable for food applications. In this study, a small peptide-induced bioflocculation technique was developed for harvesting microalgae, and the biomass was free of impurities. After seven days of cultivation with glutathione, 72 % flocculation efficiency of Chlorella pyrenoidosa was achieved after settling for 1 h. The nutrient composition of flocs depicted a higher protein (68.94 mg/L) and lipid (48.97 mg/L) content than those of the control (65.91 and 41.44 mg/L). The amino acid profiles of flocs showed the presence of more essential amino acids than in untreated cells. More omega polyunsaturated fatty acids, such as ω-3 and ω-9, accumulate in flocs. Extracellular polymeric substances, which induced bioflocculation, appeared markedly in flocs (150.02 mg/L) compared to the control (32.30 mg/L). This study provides novel insights into the residue-free algal harvesting method and obtained nutrition-enriched biomass.
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Affiliation(s)
- Nahui Hao
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Systems Microbial Biotechnology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
| | - Zhiyong Liu
- Key Laboratory of Systems Microbial Biotechnology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China; National Center of Technology Innovation for Synthetic Biology, Tianjin 300308, China
| | - Yuyong Hou
- Key Laboratory of Systems Microbial Biotechnology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China; National Center of Technology Innovation for Synthetic Biology, Tianjin 300308, China
| | - Zhihua Fan
- College of Food Science and Biological Engineering, Tianjin Agricultural University, Tianjin 300384, China
| | - Yu Li
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Fangjian Chen
- Key Laboratory of Systems Microbial Biotechnology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China; National Center of Technology Innovation for Synthetic Biology, Tianjin 300308, China.
| | - Lei Zhao
- Key Laboratory of Systems Microbial Biotechnology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China; National Center of Technology Innovation for Synthetic Biology, Tianjin 300308, China
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12
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Lin W, Chen L, Tan Z, Deng Z, Liu H. Application of filamentous fungi in microalgae-based wastewater remediation for biomass harvesting and utilization: From mechanisms to practical application. ALGAL RES 2022. [DOI: 10.1016/j.algal.2021.102614] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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13
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Ahmad A, Banat F, Alsafar H, Hasan SW. Algae biotechnology for industrial wastewater treatment, bioenergy production, and high-value bioproducts. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150585. [PMID: 34597562 DOI: 10.1016/j.scitotenv.2021.150585] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 09/08/2021] [Accepted: 09/21/2021] [Indexed: 06/13/2023]
Abstract
A growing world population is causing hazardous compounds to form at an increasingly rapid rate, calling for ecological action. Wastewater management and treatment is an expensive process that requires appropriate integration technology to make it more feasible and cost-effective. Algae are of great interest as potential feedstocks for various applications, including environmental sustainability, biofuel production, and the manufacture of high-value bioproducts. Bioremediation with microalgae is a potential approach to reduce wastewater pollution. The need for effective nutrient recovery, greenhouse gas reduction, wastewater treatment, and biomass reuse has led to a wide interest in the use of microalgae for wastewater treatment. Furthermore, algae biomass can be used to produce bioenergy and high-value bioproducts. The use of microalgae as medicine (production of bioactive and medicinal compounds), biofuels, biofertilizers, and food additives has been explored by researchers around the world. Technological and economic barriers currently prevent the commercial use of algae, and optimal downstream processes are needed to reduce production costs. Therefore, the simultaneous use of microalgae for wastewater treatment and biofuel production could be an economical approach to address these issues. This article provides an overview of algae and their application in bioremediation, bioenergy production, and bioactive compound production. It also highlights the current problems and opportunities in the algae-based sector, which has recently become quite promising.
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Affiliation(s)
- Ashfaq Ahmad
- Department of Chemical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
| | - Fawzi Banat
- Department of Chemical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
| | - Habiba Alsafar
- Department of Biomedical Engineering, College of Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Shadi W Hasan
- Department of Chemical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
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14
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Min KH, Kim DH, Ki MR, Pack SP. Recent progress in flocculation, dewatering, and drying technologies for microalgae utilization: Scalable and low-cost harvesting process development. BIORESOURCE TECHNOLOGY 2022; 344:126404. [PMID: 34826566 DOI: 10.1016/j.biortech.2021.126404] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 11/15/2021] [Accepted: 11/18/2021] [Indexed: 06/13/2023]
Abstract
Microalgal research has made significant progress in terms of the high-value-added industrial application of microalgal biomass and its derivatives. However, cost-effective techniques for producing, harvesting, and processing microalgal biomass on a large scale still need to be fully explored in order to optimize their performance and achieve commercial robustness. In particular, technologies for harvesting microalgae are critical in the practical process as they require excessive energy and equipment costs. This review focuses on microalgal flocculation, dewatering, and drying techniques and specifically covers the traditional approaches and recent technological progress in harvesting microalgal biomass. Several aspects, including the characteristics of the target microalgae and the type of final value-added products, must be considered when selecting the appropriate harvesting technique. Furthermore, considerable aspects and possible future directions in flocculation, dewatering, and drying steps are proposed to develop scalable and low-cost microalgal harvesting systems.
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Affiliation(s)
- Ki Ha Min
- Department of Biotechnology and Bioinformatics, Korea University, Sejong 30019, Republic of Korea
| | - Dong Hyun Kim
- Department of Biotechnology and Bioinformatics, Korea University, Sejong 30019, Republic of Korea
| | - Mi-Ran Ki
- Department of Biotechnology and Bioinformatics, Korea University, Sejong 30019, Republic of Korea
| | - Seung Pil Pack
- Department of Biotechnology and Bioinformatics, Korea University, Sejong 30019, Republic of Korea.
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15
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Nie Y, Wang Z, Zhang R, Ma J, Zhang H, Li S, Li J. Aspergillus oryzae, a novel eco-friendly fungal bioflocculant for turbid drinking water treatment. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119669] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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16
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Leng L, Li W, Chen J, Leng S, Chen J, Wei L, Peng H, Li J, Zhou W, Huang H. Co-culture of fungi-microalgae consortium for wastewater treatment: A review. BIORESOURCE TECHNOLOGY 2021; 330:125008. [PMID: 33773267 DOI: 10.1016/j.biortech.2021.125008] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 03/11/2021] [Accepted: 03/12/2021] [Indexed: 06/12/2023]
Abstract
The treatment of wastewater by microalgae has been studied and proved to be effective through previous studies. Due to the small size of microalgae, how to efficiently harvest microalgae from wastewater is a crucial factor restricting the development of algal technologies. Fungi-assisted microalgae bio-flocculation for microalgae harvesting and wastewater treatment simultaneously, which was overlooked previously, has attracted increasing attention in the recent decade due to its low cost and high efficiency. This review found that fungal hyphae and microalgae can stick together due to electrostatic neutralization, surface protein interaction, and exopolysaccharide adhesion in the co-culture process, realizing co-pelletization of microalgae and fungi, which is conducive to microalgae harvesting. Besides, the combination of fungi and microalgae has a complementary effect on pollutant removal from wastewaters. The co-culture of fungi-microalgae has excellent development prospects with both environmental and economic benefits, and it is expected to be applied on an industrial scale.
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Affiliation(s)
- Lijian Leng
- School of Energy Science and Engineering, Central South University, Changsha 410083, China
| | - Wenting Li
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, and School of Resources, Environmental & Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Jie Chen
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, and School of Resources, Environmental & Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Songqi Leng
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, and School of Resources, Environmental & Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Jiefeng Chen
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, and School of Resources, Environmental & Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Liang Wei
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, and School of Resources, Environmental & Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Haoyi Peng
- School of Energy Science and Engineering, Central South University, Changsha 410083, China
| | - Jun Li
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, and School of Resources, Environmental & Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Wenguang Zhou
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, and School of Resources, Environmental & Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Huajun Huang
- School of Land Resources and Environment, Jiangxi Agricultural University, Nanchang 330045, China.
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17
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Ray A, Banerjee S, Das D. Microalgal bio-flocculation: present scenario and prospects for commercialization. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:26294-26312. [PMID: 33797715 DOI: 10.1007/s11356-021-13437-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 03/09/2021] [Indexed: 06/12/2023]
Abstract
The need for sustainable production of renewable biofuel has been a global concern in the recent times. Overcoming the tailbacks of the first- and second-generation biofuels, third-generation biofuel using microalgae as feedstock has emerged as a plausible alternative. It has an added advantage of preventing any greenhouse gas (GHG) emissions with simultaneous carbon dioxide sequestration. Dewatering of microalgal culture is one of the many concerns regarding industrial-scale biofuel production. The small size of microalgae and dilute nature of its growth cultures creates huge operational cost during biomass separation, limiting economic feasibility of algae-based fuels. Considering the recovery efficiency, operation economics, technological feasibility and cost-effectiveness, bio-flocculation is a promising method of harvesting. Moreover, advantage of bio-flocculation over other conventional methods is that it does not incur the addition of any external chemical flocculants. This article reviews the current status of bio-flocculation technique for harvesting microalgae at industrial scale. The various microbial strains that can be prospective bioflocculants have been reviewed along with its application and advantages over chemical flocculants. Also, this article proposes that the primary focus of an appropriate harvesting technique should depend on the final utilization of the harvested biomass. This review article attempts to bring forth the beneficial aspects of microbial aided microalgal harvesting with a special attention on genetically modified self-flocculation microalgae.
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Affiliation(s)
- Ayusmita Ray
- P K Sinha Centre for Bioenergy and Renewables, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Sanjukta Banerjee
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Debabrata Das
- P K Sinha Centre for Bioenergy and Renewables, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
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18
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Kapoore RV, Padmaperuma G, Maneein S, Vaidyanathan S. Co-culturing microbial consortia: approaches for applications in biomanufacturing and bioprocessing. Crit Rev Biotechnol 2021; 42:46-72. [PMID: 33980092 DOI: 10.1080/07388551.2021.1921691] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The application of microbial co-cultures is now recognized in the fields of biotechnology, ecology, and medicine. Understanding the biological interactions that govern the association of microorganisms would shape the way in which artificial/synthetic co-cultures or consortia are developed. The ability to accurately predict and control cell-to-cell interactions fully would be a significant enabler in synthetic biology. Co-culturing method development holds the key to strategically engineer environments in which the co-cultured microorganism can be monitored. Various approaches have been employed which aim to emulate the natural environment and gain access to the untapped natural resources emerging from cross-talk between partners. Amongst these methods are the use of a communal liquid medium for growth, use of a solid-liquid interface, membrane separation, spatial separation, and use of microfluidics systems. Maximizing the information content of interactions monitored is one of the major challenges that needs to be addressed by these designs. This review critically evaluates the significance and drawbacks of the co-culturing approaches used to this day in biotechnological applications, relevant to biomanufacturing. It is recommended that experimental results for a co-cultured species should be validated with different co-culture approaches due to variations in interactions that could exist as a result of the culturing method selected.
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Affiliation(s)
- Rahul Vijay Kapoore
- Department of Chemical and Biological Engineering, The University of Sheffield, Sheffield, UK.,Department of Biosciences, College of Science, Swansea University, Swansea, UK
| | - Gloria Padmaperuma
- Department of Chemical and Biological Engineering, The University of Sheffield, Sheffield, UK
| | - Supattra Maneein
- Department of Chemical and Biological Engineering, The University of Sheffield, Sheffield, UK.,Department of Pharmaceutical, Chemical & Environmental Sciences, The University of Greenwich, Kent, UK
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19
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Laamanen C, Desjardins S, Senhorinho G, Scott J. Harvesting microalgae for health beneficial dietary supplements. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102189] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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20
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Nazari MT, Rigueto CVT, Rempel A, Colla LM. Harvesting of Spirulina platensis using an eco-friendly fungal bioflocculant produced from agro-industrial by-products. BIORESOURCE TECHNOLOGY 2021; 322:124525. [PMID: 33333395 DOI: 10.1016/j.biortech.2020.124525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 12/03/2020] [Accepted: 12/05/2020] [Indexed: 06/12/2023]
Abstract
This study aimed to produce fungal biomass from agro-industrial by-products for later use as a bioflocculant in the Spirulina harvesting. The production of fungal biomass from Aspergillus niger was carried out in submerged fermentation, using media composed of wheat bran and/or potato peel. Fungal biomass was used as a bioflocculant in Spirulina cultures carried out in closed 5 L reactors and 180 L open raceway pond operated in batch and semi-continuous processes, respectively. Fungal biomass was able to harvest Spirulina platensis cultures with efficiencies between 90% and 100% after 2 h of sedimentation in some experimental conditions. Efficiencies higher than 80% were achieved in most tests without pH adjustment during bioflocculations, which shows that the developed method is a promising alternative to traditional Spirulina harvesting techniques. Above all, the development of an eco-friendly fungal-assisted bioflocculation process increases the sustainability of Spirulina biomass for different applications, especially biofuels.
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Affiliation(s)
- Mateus Torres Nazari
- Postgraduate Program in Civil and Environmental Engineering (PPGEng), Faculty of Engineering and Architecture (FEAR), University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
| | - César Vinicius Toniciolli Rigueto
- Postgraduate Program in Food Science and Technology (PPGCTA), Faculty of Agronomy and Veterinary Medicine (FAMV), University of Passo Fundo (UPF), Passo Fundo RS, Brazil
| | - Alan Rempel
- Postgraduate Program in Civil and Environmental Engineering (PPGEng), Faculty of Engineering and Architecture (FEAR), University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
| | - Luciane Maria Colla
- Postgraduate Program in Civil and Environmental Engineering (PPGEng), Faculty of Engineering and Architecture (FEAR), University of Passo Fundo (UPF), Passo Fundo, RS, Brazil; Postgraduate Program in Food Science and Technology (PPGCTA), Faculty of Agronomy and Veterinary Medicine (FAMV), University of Passo Fundo (UPF), Passo Fundo RS, Brazil.
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21
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Salakkam A, Sittijunda S, Mamimin C, Phanduang O, Reungsang A. Valorization of microalgal biomass for biohydrogen generation: A review. BIORESOURCE TECHNOLOGY 2021; 322:124533. [PMID: 33348113 DOI: 10.1016/j.biortech.2020.124533] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 12/05/2020] [Accepted: 12/08/2020] [Indexed: 05/16/2023]
Abstract
Third generation biomass, i.e. microalgae, has emerged as a promising alternative to first and second generation biomass for biohydrogen production. However, its utilization is still low at present, due to several reasons including the strong and rigidity of the microalgal cell wall that limit the hydrolysis efficiency during dark fermentation (DF) and photofermentation (PF) processes. To improve the utilization efficiency of microalgal biomass, it is crucial that important aspects related to the production of the biomass and the following processes are elaborated. Thus, this article provides detailed overview of algal strains, cultivation, and harvesting. It also presents recent research and detailed information on microalgal biomass pretreatment, and biohydrogen production through DF, PF, and co-digestion of microalgal biomass with organic materials. Furthermore, factors affecting fermentation processes performance and the use of molecular techniques in biohydrogen production are presented. This review also discusses challenges and future prospects towards biohydrogen production from microalgal biomass.
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Affiliation(s)
- Apilak Salakkam
- Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Sureewan Sittijunda
- Faculty of Environment and Resource Studies, Mahidol University, Nakhon Pathom 73170, Thailand
| | - Chonticha Mamimin
- Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Orawan Phanduang
- Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Alissara Reungsang
- Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen 40002, Thailand; Research Group for Development of Microbial Hydrogen Production Process from Biomass, Khon Kaen University, Khon Kaen 40002, Thailand; Academy of Science, Royal Society of Thailand, Bangkok 10300, Thailand.
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22
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Taghavijeloudar M, Kebria DY, Yaqoubnejad P. Simultaneous harvesting and extracellular polymeric substances extrusion of microalgae using surfactant: Promoting surfactant-assisted flocculation through pH adjustment. BIORESOURCE TECHNOLOGY 2021; 319:124224. [PMID: 33254453 DOI: 10.1016/j.biortech.2020.124224] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 10/01/2020] [Accepted: 10/04/2020] [Indexed: 06/12/2023]
Abstract
In this research, the use of four different types of surfactants on biomass harvesting and extracellular polymeric substances (EPS) extrusion of Chlorella sorokiniana sp was investigated. The synergy between cationic surfactants and pH was tested to improve flocculation efficiency through the combined mechanism of charge neutralization, bridging and sweeping. Zeta potential and microscopic images were used to gain mechanistic understanding. The harvesting efficacy correlated positively with the biomass zeta potential and the surfactants alkyl-chain length; i.e., CTAB (88%) > DTAB (66%) > triton X-100 (41%) > SDS (11%). When the pH increased from 8 to 12, the harvesting efficiency was improved 12% and 39% for CTAB and DTAB, respectively. More interestingly, pH adjustment dramatically reduced the optimal dosages of CTAB and DTAB from 400 to 50 and 1000 to 300 mg/L, respectively. All selected surfactants could successfully release high value components of EPS such as protein and polysaccharide.
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Affiliation(s)
- Mohsen Taghavijeloudar
- Department of Environmental Engineering, Faculty of Civil Engineering, Babol Noshirvani University of Technology, P.O. Box: 484, Babol, Iran.
| | - Daryoush Yousefi Kebria
- Department of Environmental Engineering, Faculty of Civil Engineering, Babol Noshirvani University of Technology, P.O. Box: 484, Babol, Iran
| | - Poone Yaqoubnejad
- Department of Environmental Engineering, Faculty of Civil Engineering, Babol Noshirvani University of Technology, P.O. Box: 484, Babol, Iran
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23
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Demir I, Besson A, Guiraud P, Formosa-Dague C. Towards a better understanding of microalgae natural flocculation mechanisms to enhance flotation harvesting efficiency. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 82:1009-1024. [PMID: 33055392 DOI: 10.2166/wst.2020.177] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In microalgae harvesting, flocculation is usually a compulsory preliminary step to further separation by sedimentation or flotation. For some microalgae species, and under certain growth conditions, flocculation can occur naturally. Natural flocculation presents many advantages as it does not require the addition of any flocculants to the culture medium and shows high efficiency rate. But because natural flocculation is so specific to the species and conditions, and thanks to the knowledge accumulated over the last years on flocculation mechanisms, researchers have developed strategies to induce this natural harvesting. In this review, we first decipher at the molecular scale the underlying mechanisms of natural flocculation and illustrate them by selected studies from the literature. Then we describe the developed strategies to induce natural flocculation that include the use of biopolymers, chemically modified or not, or involve mixed species cultures. But all these strategies need the addition of external compounds or microorganism which can present some issues. Thus alternative directions to completely eliminate the need for an external molecule, through genetic engineering of microalgae strains, are presented and discussed in the third part of this review.
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Affiliation(s)
- Irem Demir
- TBI, Université de Toulouse, CNRS, INRAE, INSA, Toulouse, France and TBI-INSA de Toulouse, 135 avenue de Rangeuil 31077 Toulouse Cedex 4, France E-mail:
| | - Alexandre Besson
- TBI, Université de Toulouse, CNRS, INRAE, INSA, Toulouse, France and TBI-INSA de Toulouse, 135 avenue de Rangeuil 31077 Toulouse Cedex 4, France E-mail:
| | - Pascal Guiraud
- TBI, Université de Toulouse, CNRS, INRAE, INSA, Toulouse, France and TBI-INSA de Toulouse, 135 avenue de Rangeuil 31077 Toulouse Cedex 4, France E-mail:
| | - Cécile Formosa-Dague
- TBI, Université de Toulouse, CNRS, INRAE, INSA, Toulouse, France and TBI-INSA de Toulouse, 135 avenue de Rangeuil 31077 Toulouse Cedex 4, France E-mail:
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24
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Zhang W, Zhao C, Cao W, Sun S, Hu C, Liu J, Zhao Y. Removal of pollutants from biogas slurry and CO 2 capture in biogas by microalgae-based technology: a systematic review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:28749-28767. [PMID: 32468373 DOI: 10.1007/s11356-020-09282-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Accepted: 05/12/2020] [Indexed: 06/11/2023]
Abstract
Recent research interest has focused on microalgae cultivation for biogas slurry purification and biogas upgrading due to the requirement of high efficiency for nutrient uptake and CO2 capture, with economic feasibility and environmental benefits. Numerous studies have suggested that biogas slurry purification and biogas upgrading can occur simultaneously via microalgae-based technology. However, there is no comprehensive review on this technology with respect to the nutrient removal from biogas slurry and biogas upgrading. This article summarizes microalgal cultivation with biogas slurry and biogas from anaerobic digestion. The parameters, techniques, and modes of microalgae cultivation have been discussed in detail to achieve high efficiency in biogas slurry purification and biogas upgrading. In addition, the evaluation of energy efficiency and safety has also been explored. Compared with mono-cultivation of microalgae and co-cultivation of microalgae and bacteria, microalgae-fungi symbiosis has demonstrated greater development prospect and higher energy efficiency and the energy consumption for pollutants and CO2 removal were 14.2-39.0% · USD-1 and 19.9-23.3% · USD-1, respectively. Further, a sustainable recycling scheme is proposed for the purification of biogas slurry from anaerobic digestion process and biogas upgrading via microalgae-based technology.
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Affiliation(s)
- Wenguang Zhang
- Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130012, People's Republic of China
| | - Chunzhi Zhao
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 200235, People's Republic of China
| | - Weixing Cao
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing, 314001, People's Republic of China
| | - Shiqing Sun
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing, 314001, People's Republic of China
| | - Changwei Hu
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing, 314001, People's Republic of China
| | - Juan Liu
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing, 314001, People's Republic of China.
| | - Yongjun Zhao
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing, 314001, People's Republic of China.
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25
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Insight on Extraction and Characterisation of Biopolymers as the Green Coagulants for Microalgae Harvesting. WATER 2020. [DOI: 10.3390/w12051388] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This review presents the extractions, characterisations, applications and economic analyses of natural coagulant in separating pollutants and microalgae from water medium, known as microalgae harvesting. The promising future of microalgae as a next-generation energy source is reviewed and the significant drawbacks of conventional microalgae harvesting using alum are evaluated. The performances of natural coagulant in microalgae harvesting are studied and proven to exceed the alum. In addition, the details of each processing stage in the extraction of natural coagulant (plant, microbial and animal) are comprehensively discussed with justifications. This information could contribute to future exploration of novel natural coagulants by providing description of optimised extraction steps for a number of natural coagulants. Besides, the characterisations of natural coagulants have garnered a great deal of attention, and the strategies to enhance the flocculating activity based on their characteristics are discussed. Several important characterisations have been tabulated in this review such as physical aspects, including surface morphology and surface charges; chemical aspects, including molecular weight, functional group and elemental properties; and thermal stability parameters including thermogravimetry analysis and differential scanning calorimetry. Furthermore, various applications of natural coagulant in the industries other than microalgae harvesting are revealed. The cost analysis of natural coagulant application in mass harvesting of microalgae is allowed to evaluate its feasibility towards commercialisation in the industrial. Last, the potentially new natural coagulants, which are yet to be exploited and applied, are listed as the additional information for future study.
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26
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Lu W, Asraful Alam M, Liu S, Xu J, Parra Saldivar R. Critical processes and variables in microalgae biomass production coupled with bioremediation of nutrients and CO 2 from livestock farms: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 716:135247. [PMID: 31839294 DOI: 10.1016/j.scitotenv.2019.135247] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 10/21/2019] [Accepted: 10/26/2019] [Indexed: 06/10/2023]
Abstract
Development of renewable and clean energy as well as bio-based fine chemicals technologies are the keys to overcome the problems such as fossil depletion, global warming, and environment pollution. To date, cultivation of microalgae using wastewater is regarded as a promising approach for simultaneous nutrients bioremediation and biofuels production due to their high photosynthesis efficiency and environmental benefits. However, the efficiency of nutrients removal and biomass production strongly depends on wastewater properties and microalgae species. Moreover, the high production cost is still the largest limitation to the commercialization of microalgae biofuels. In this review paper, the state-of-the-art algae species employed in livestock farm wastes have been summarized. Further, microalgae cultivation systems and impact factors in livestock wastewater to microalgae growth have been thoroughly discussed. In addition, technologies reported for microalgal biomass harvesting and CO2 mass transfer enhancement in the coupling process were presented and discussed. Finally, this article discusses the potential benefits and challenges of coupling nutrient bioremediation, CO2 capture, and microalgal production. Possible engineering measures for cost-effective nutrients removal, carbon fixation, microalgal biofuels and bioproducts production are also proposed.
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Affiliation(s)
- Weidong Lu
- School of Chemistry and Environmental Engineering, Shaoguan University, Shaoguan 512005, China; Department of Paper and Bioprocess Engineering, SUNY College of Environmental Science and Forestry, 1 Forestry Drive, Syracuse, NY 13210, United States
| | - Md Asraful Alam
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China.
| | - Shijie Liu
- Department of Paper and Bioprocess Engineering, SUNY College of Environmental Science and Forestry, 1 Forestry Drive, Syracuse, NY 13210, United States
| | - Jinliang Xu
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Roberto Parra Saldivar
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, CP 64849, Monterrey, NL., Mexico
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Roy M, Mohanty K. A comprehensive review on microalgal harvesting strategies: Current status and future prospects. ALGAL RES 2019. [DOI: 10.1016/j.algal.2019.101683] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Zhao Y, Guo G, Sun S, Hu C, Liu J. Co-pelletization of microalgae and fungi for efficient nutrient purification and biogas upgrading. BIORESOURCE TECHNOLOGY 2019; 289:121656. [PMID: 31226674 DOI: 10.1016/j.biortech.2019.121656] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 06/12/2019] [Accepted: 06/13/2019] [Indexed: 06/09/2023]
Abstract
The fungi-assisted microalgae pellets were cultivated to simultaneously purify biogas slurry and biogas. Results demonstrated that the optimized culture conditions for the pellets were at the shaking speed of 160 rpm, initial inoculum concentration of 1.0 × 106 spores L-1 for microalgal cells, fungi/algae ratio of 1:10, mixed medium/simulated biogas slurry ratio of 3:7 incubated at a light intensity of 200 μmol m-2 s-1. Moreover, biogas slurry purification and biogas upgrading were successfully achieved by co-cultivation of fungi-assisted microalgae pellets at mixed light wavelength of red:blue of 5:5. The highest removal efficiency of COD, TN, TP and CO2 were 92.17 ± 5.28%, 89.83 ± 4.36%, 90.31 ± 4.69% and 74.26 ± 3.14%, respectively. These results will provide a theoretical foundation for large-scale biogas slurry purification and biogas upgrading using fungi-assisted microalgal pellets.
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Affiliation(s)
- Yongjun Zhao
- College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, PR China
| | - Guangyong Guo
- School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, PR China
| | - Shiqing Sun
- College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, PR China
| | - Changwei Hu
- College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, PR China
| | - Juan Liu
- College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, PR China.
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Rashid N, Nayak M, Suh WI, Lee B, Chang YK. Efficient microalgae removal from aqueous medium through auto-flocculation: investigating growth-dependent role of organic matter. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:27396-27406. [PMID: 31327138 DOI: 10.1007/s11356-019-05904-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 07/03/2019] [Indexed: 06/10/2023]
Abstract
This study investigated the growth-dependent role of algal organic matters (AOMs) to achieve high removal efficiency (R.E) of microalgae. The results showed that the microalgae cells produced 96 ± 2% of total AOMs as loose bound AOMSS (LB-AOMs) and 4 ± 1% as cell-bound (CB-AOMs) in exponential phase. In stationary phase, LB-AOMs and CB-AOMs were 46 ± 0.7percentage and 54 ± 0.2 percentage, respectively. The R.Es in exponential and stationary phase were 83 ± 2.6% and 66 ± 1.2%, respectively. It is found that the difference of biomass concentration (between exponential and stationary phase) had no significant impact on the R.E (P > 0.01). Further investigations revealed that LB-AOMs inhibit flocculation in exponential and CB-AOMs in stationary phase; however, CB-AOMs showed stronger inhibition than the LB-AOMs (P < 0.01). The provision of calcium (17 ± 0.9 mg/L) to the culture reduced the AOMs inhibition and improved the R.E from 66 ± 1.2% (in control) to 90 ± 4.2%. An increase in R.E was attributed to the interaction of calcium with AOMs and subsequently acting as a flocculant. The findings of this study can be valuable to improve the performance of auto-flocculation technology, which is mainly limited by the presence of AOMs. Graphical Abstract.
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Affiliation(s)
- Naim Rashid
- Advanced Biomass R&D Center, Korea Advanced Institute of Science and Technology (KAIST), 291- Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
- Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
| | - Manoranjan Nayak
- Advanced Biomass R&D Center, Korea Advanced Institute of Science and Technology (KAIST), 291- Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - William I Suh
- Advanced Biomass R&D Center, Korea Advanced Institute of Science and Technology (KAIST), 291- Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Bongsoo Lee
- Advanced Biomass R&D Center, Korea Advanced Institute of Science and Technology (KAIST), 291- Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.
- Department of Microbial and Nano Materials, College of Science and Technology, Mokwon University, 88 Doanbuk-ro, Seo-gu, Daejeon, 35349, Republic of Korea.
| | - Yong-Keun Chang
- Advanced Biomass R&D Center, Korea Advanced Institute of Science and Technology (KAIST), 291- Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.
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